> Barry Branham wrote:
> > I'm trying to implement a sidebar that you can hide and show again.
> > I'm using fltk-2.0.x-r5864.
> >
> > To do that I hide the sidebar group, then resize the group on the left to
> > have the full window width with position x==0. The left group is the
> > window resizeable. To make this happen I had to call Window->init_sizes().
> > Then to unhide (show) the sidebar again, I resize the left group to
> > x==sidebar_width and w==(window->w()-sidebar_width). Again I call
> > Window->init_sizes().
>
> That seems okay so far. Calling init_sizes() is the right way to go.
>
> > This works fine, but if I resize the main window after hiding the sidebar,
> > then show the sidebar, it's width is changed. If the window was widened,
> > the sidebar is wider and vice versa.
>
> You didn't tell us, what "sidebar_width" is. A constant? Something you
> calculate?
>
> > Am I doing something wrong or is this a bug?
> > I have an example program (a revision of the test/resizable program)
>
> Posting a short example program would be helpful.
>
Thanks for your reply. sidebar_width is a constant (95 in example).
Here's the example program inline, don't see how to attach it.
I replaced the arrow buttons at the lower right in the original resizable
program with a 'Show' button for showing the hidden sidebar.
You click the red 'X' to hide it.
-------------------------
// generated by Fast Light User Interface Designer (fluid) version 2.0002
// and Barry Branham 13-sep-07
#include <fltk/Window.h>
#include <fltk/MenuBar.h>
#include <fltk/ItemGroup.h>
#include <fltk/Item.h>
#include <fltk/InvisibleBox.h>
#include <fltk/Button.h>
#include <fltk/Group.h>
#include <fltk/run.h>
fltk::Window *win;
fltk::InvisibleBox *rbox, *bigbox;
void hideCB(fltk::Widget *w, void *g)
{
((fltk::Group *)g)->hide();
bigbox->resize( 0, 25, win->w(), bigbox->h());
rbox->resize( 0, 150, rbox->w()+95, rbox->h());
win->init_sizes();
}
void showCB(fltk::Widget *w, void *g)
{
((fltk::Group *)g)->show();
bigbox->resize( 95, 25, win->w()-95, bigbox->h());
rbox->resize( 95, 150, rbox->w()-95, rbox->h());
win->init_sizes();
}
int main (int argc, char **argv) {
fltk::Window* w;
fltk::Group *show_hide_group;
{fltk::Window* o = win = new fltk::Window(560, 470);
w = o;
o->begin();
{fltk::MenuBar* o = new fltk::MenuBar(515, 0, 45, 25);
o->tooltip("A right-justified help item can be made by making a second
menubar and puttin\
g it to the right of the resizable().");
o->begin();
{fltk::ItemGroup* o = new fltk::ItemGroup("Help");
o->begin();
new fltk::Item("About...");
new fltk::Item("Chapter 1");
o->end();
}
o->end();
}
{fltk::MenuBar* o = new fltk::MenuBar(0, 0, 515, 25);
o->begin();
new fltk::Item("This");
new fltk::Item("is");
new fltk::Item("a");
new fltk::Item("Menu");
o->end();
}
{fltk::InvisibleBox* o = bigbox = new fltk::InvisibleBox(95, 25, 465, 419,
"\nThis program demonstrates how you set the resizable() of a window to get th\
ings to resize the way you want.");
o->box(fltk::FLAT_BOX);
o->color((fltk::Color)19);
o->labelcolor((fltk::Color)7);
o->align(fltk::ALIGN_TOP|fltk::ALIGN_INSIDE|fltk::ALIGN_CLIP|fltk::ALIGN_WRAP);
}
{
show_hide_group = new fltk::Group( 0, 25, 95, 420);
show_hide_group->begin();
{
fltk::Group* o = new fltk::Group(0, 0, 95, 25, "History");
o->labelfont(fltk::HELVETICA_BOLD);
o->align(fltk::ALIGN_INSIDE);
o->begin();
{
fltk::Button* o = new fltk::Button(75, 5, 15, 15, "X");
o->color((fltk::Color)0xff000000);
o->callback((fltk::Callback*)hideCB,
(void*)(show_hide_group));
}
o->end();
}
{fltk::Button* o = new fltk::Button(0, 25, 95, 25, "These");
o->color((fltk::Color)47);
}
{fltk::Button* o = new fltk::Button(0, 50, 95, 25, "are some");
o->color((fltk::Color)47);
}
{fltk::Button* o = new fltk::Button(0, 75, 95, 25, "buttons");
o->color((fltk::Color)47);
}
{fltk::Button* o = new fltk::Button(0, 100, 95, 25, "we don't want");
o->color((fltk::Color)47);
}
{fltk::Button* o = new fltk::Button(0, 125, 95, 25, "to resize.");
o->color((fltk::Color)47);
}
{fltk::Button* o = new fltk::Button(0, 150, 95, 25, "Things that");
o->color((fltk::Color)0x8e6f8c00);
}
{fltk::Button* o = new fltk::Button(0, 175, 95, 25, "overlap the box");
o->color((fltk::Color)0x8e6f8c00);
}
{fltk::Button* o = new fltk::Button(0, 200, 95, 25, "will scale.");
o->color((fltk::Color)0x8e6f8c00);
}
{fltk::Group* o = new fltk::Group(0, 225, 95, 165, "A group");
o->box(fltk::ENGRAVED_BOX);
o->labeltype(fltk::ENGRAVED_LABEL);
o->labelcolor((fltk::Color)49);
o->align(fltk::ALIGN_BOTTOM|fltk::ALIGN_INSIDE);
o->tooltip("This group has resizable(0) (this is the default). But you
can set a group's\
resizable to nest different resize behavior.");
o->begin();
{fltk::Button* o = new fltk::Button(5, 5, 85, 25, "You can put");
o->color((fltk::Color)47);
}
{fltk::Button* o = new fltk::Button(5, 30, 85, 25, "them inside");
o->color((fltk::Color)47);
}
{fltk::Button* o = new fltk::Button(5, 55, 85, 25, "a group to");
o->color((fltk::Color)47);
}
{fltk::Button* o = new fltk::Button(5, 80, 85, 25, "stop scaling.");
o->color((fltk::Color)47);
}
o->end();
}
{fltk::Button* o = new fltk::Button(0, 395, 95, 25, "nonscaling");
o->color((fltk::Color)47);
}
show_hide_group->end();
}
{fltk::InvisibleBox* o = new fltk::InvisibleBox(0, 444, 460, 25, "This
status message will resize horizontally only.");
o->box(fltk::BORDER_BOX);
o->color((fltk::Color)55);
o->align(fltk::ALIGN_LEFT|fltk::ALIGN_INSIDE);
}
{
fltk::Button *o = new fltk::Button(460, 445, 100, 25, "Show");
o->callback( showCB, (void *)(show_hide_group));
}
{fltk::InvisibleBox* o = rbox = new fltk::InvisibleBox(95, 150, 365, 270,
"This is the resizable() of the window.\nIt is normally invisible.");
o->box(fltk::BORDER_BOX);
o->color((fltk::Color)37);
o->labelcolor((fltk::Color)1);
o->align(fltk::ALIGN_CLIP|fltk::ALIGN_WRAP);
fltk::Group::current()->resizable(o);
o->tooltip("To make it invisible, use an Fl_Box with the default
box(FL_NO_BOX) and no la\
bel.\n\nFltk sets the window's minimum size such that this widget's minimum si\
ze is 100, unless it starts out smaller than that. You can override this defa\
ult by calling size_range() on the window.");
}
o->end();
}
// w->size_range(w->w()-w->resizable()->w(), w->h()-w->resizable()->h());
w->show(argc, argv);
return fltk::run();
}
------------
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